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HomeMy WebLinkAbout45&46-99 Z 338-99 PRovidence at Old Meridian - Specifications - C102i 1 2. SECTION 02110 SITE CLEARING 1. Scope of Work Clearing and grubbing shall consist of cutting, removal and satisfactory disposal of all trees, down timber, brush, projecting roots, stumps, rubbish, boulders, broken con- crete, fencing (as designated), and other material on the project site within the construction limits. All debris9enerated from the clearing operations stated in Item shall be removed legally disposed of off the project site; unless a "Bury -Pit approved by the Owner and Engineer in advance, can be utilized in an area where it shall not be beneath building areas and /or pavement areas and shall not be located in an area where any utility struc- tures are located or where impoundment of surface drainage may occur. 3. Materials shall not be disposed of by burning unless ap- proved by the local Fire Marshall and Owner, and all re- quired permits are obtained by the Contractor. 4. Traffic: Conduct site clearing operations to ensure minimum interference with roads, streets, walks, and other adjacent occupied or used facilities. Do not close or obstruct streets, walks, or other occupied or used facilities without permission from the appropriate governmental agency. 5. Protection of Existing Improvement: Provide protections necessary to prevent damage to existing improvements indi- cated to remain in place. a. Protect improvements on adjoining properties and on Owner's property. b. Restore damaged improvements to their original condi- tions, as acceptable to parties having jurisdiction. 6. Protection of Existing Trees and Vegetation: Protect exist- ing trees and other vegetation indicated to remain in place, against unnecessary cutting, breaking or skinning of roots, skinning and bruising of bark, smothering of trees by stock- piling construction materials within drip line, excess foot or vehicular traffic, or parking of vehicles within drip line. Provide temporary fencing or approved guarding meth- ods to protect trees and vegetation to be left standing. SECTION 02210 STRIPPING 1. The Contractor shall remove all topsoil in the areas to be occupied by roads, parking areas, walks, buildings and designated future building fill areas. Topsoil shall be removed to a depth of six (6) inches or deeper, if neces- sary, to remove organic vegetative matter where required. See Soils Report for approximate topsoil thickness. If site has been recently stripped, the topsoil shall be removed to depth required to remove all roots as required by Soils Engineer, Street Inspector, Engineer and Owner. 2. Topsoil shall be kept separated from suitable fill materials it 1._ and shall b in not be used as fill under pavement and U d g areas. 3. Topsoil shall be stored at a location where it does not interfere with construction operations. 4. Topsoil shall be reasonably free from subsoil debris, stones, ect. 5. Topsoil shall be spread over all areas to receive seeding and landscaping. Landscaped islands and planting areas shall have a minimum of twelve (12) inches of topsoil and seeded or sodded areas shall have a minimum of six (6) inches of topsoil spread. 6. Excess topsoil to be stockpiled in the areas designated on the Grading Plan, or removed from the site if directed by the Owner or Engineer. J1 surface water drainage swales shown on the plans are uni- formly finished graded to the designated minimum slopes and elevations. 6. Settling and Ponding: Where settling and ponding is meas- urable or observable at excavated areas during the general project warranty period, remove surface (pavement, lawn or other finish), add backfill material, compact, and replace surface treatment. Restore appearance, quality, and condi- tion of surface or finish to match adjacent work, and elimi- nate evidence of restoration. 7. Removal from Owner's Property: Remove waste materials, including surplus excavated material, unacceptable excavated material, trash and debris, topsoil, and jegal ly dispose of it off project site unless otherwise directed. The location of dump and length of haul shall be the Contractor's respon- sibility. SECTION 02510 STREETS AND PARKING LOTS 1. Scope of Work The work required under this section includes all concrete and bituminous paving and related items necessary to com- plete the work indicated on Plans and described in the Specifications, including but not limited to: All streets, parking areas in Contract limits Curbs and Gutters Sidewalks Signs, concrete slabs and exterior steps 2. Construction within Right -of -Way: All street construction within the lines of dedicated right -of -way shall be in accordance with the requirements of the Indiana Department of Transportation (INDOT), latest revision, and the City of Carmel. 3. Grading: Perform any necessary grading to that accomplished in accordance with SECTION 02220 EARTHWORK, to bring sub grades, after final compaction, to the required grades and cross sections for site improvement. 4. Preparation of Subgrade: Contractor shall perform all top soil stripping operations for street areas pursuant to SEC- TION 02210 STRIPPING and shall perform proof rolling and earthwork construction operations pursuant to SECTION 02220 EARTHWORK and to the requirements stated in section 207 of INDOT, per latest revision. 5. Compaction of Subgrade: All roadway areas (including the areas beneath the curbs), regardless of whether they are located in Cut or Fill, shell have the first six (6) inches below the final subgrar: elevation compacted to at least 100% of the maximum dry density as determined by the provi- sions of AASHTO T -99. Water shall be prevented from stand- ing on the compacted subgrade. 6. Acceptance of Subgrade: The Earthwork Contractor shall coordinate the preparation b subgrade with the appropriate governmental agency (Street Inspector), the Owner, and the Paving Contractor. Subgrade shall be inspected and tested by the Street Inspector prior to pavement construction. The condition of the subgrade as finally and acceptably prepared shall prevail at the t;iTe any paving material is placed thereon. Prepared subgrade damaged for any reason prior to accept once by the Street Inspector and Paving Contractor shall be repaired by the Earthwork Contractor at no additional cost to Owner. Approved subgrade shall be paved with the initial H.A.C. base course one day after acceptance by the Street Inspector. Approved subgrade damaged for any reason after acceptance by the Street Inspector and the Paving Contractor shall be repaired by the Paving Contractor at no additional cost to Owner. Should the Paving Contractor refuse acceptance of the sub- grade, he shall notify the Earthwork Contractor and the Owner of the deficiencies. Should the Paving Contractor fail to notify the Earthwork Contractor and the Owner of any deficiencies and /or proceed in the placing of the H.A.C. base course, said actions shall constitute acceptance of subgrade. The Owner shall have the authority to adjust the construc- tion schedules of the Earthwork Contractor and the Paving Contractor as is required to net the above requirements. 7. Utility Structures: Earthwork Contractor shall check for correct elevation of all manhole covers, valve boxes and similar structures located within areas to be paved, and make, or have made, any necessary adjustments in structures. Paving Contractor shall verify the above prior to placing pavement materials. Adjustments to utility structures required after placement of paving materials shall be the responsibility of Paving Contractor. 8. Bituminous Pavement: All materials and construction methods proposed for the construction of bituminous pavements shall comply with section 403 of INDOT, per latest revision. The front face of curbs shall be tack coated where H.A.0 pave- ment will be in contact. Unless specific approval is grant- ed, paving will not be permitted during unfavorable weather or when the temperature is 40 degrees F. and falling. 9. Tack and Prime Coats: If the previously constructed course is granular and a prime coat is required, priming shall conform with applicable provisions of section 408 of INDOT, per latest revision. The tack coat on H.A.0 base or binder shall conform with requirements set out in section 409 of INDOT, per latest revision. 10. Compacted Aggregate Base Course: shall conform with material and construction method requirements set out in section 303 of INDOT, per latest revision. The thickness shown on the Plans is the minimum thickness of the fully compacted aggre- gate base course. Compaction shall be accomplished by rolling with a smooth wheeled roller weighing 8 to 10 tons. Compact to 100 of maximum dry density in accordance with INDOT section 304.05, latest revision. Along curbs, head- ers, and walls and at all places not accessible to the roller, the aggregate material shall be tamped with mechani- cal tampers or with approved hand tampers. and water. Minimum cement content shall be 6 bags per cubic yard of concrete and maximum water content shall be 5.5 U.S. gallons per sack of cement, including moisture in the aggregate. Slump for normal weight concrete shall be a maximum of 4 inches and a minimum of 2 inches. The slump of machine placed concrete shall be no less than 1 -1/4 inches nor more than 3 inches. Standard test ASTM C -143 shall be used to measure slump. Compressive strength of concrete at 28 days shall be 4000 psi. All exterior concrete shall have air entrainment of 5% to 8% by volume per ASTM C -260. Retempering of delivered concrete will not be allowed. Concrete shall be composed of: A. Portland Cement: Conforming to ASTM C -150, Type IA or s B. Aggregates: Conforming to ASTM C-33. C. Water: Shall be clear and free from injurious amounts of oils, acids, alkalies, organic materials or other deleterious substances. 13. Welded Steel Wire Fabric: Where required for concrete reinforcement shall conform to ASTM A185. 14. Premoulded Joint Filler: Shall be of non extruding type meeting ASTM D -544, except that premoulded joint filler used in concrete walk construction may be either non extruding or resilient. 15. Placing Concrete: A. Subgrade: Place concrete only on a moist, compacted subgrade or base free from loose material. Place no concrete on a muddy or frozen subgrade. Refer to SEC- TION 02220 EARTHWORK and requirements pertaining to subgrade described within this Section. B. Forms: All forms shall be free from warp, tight enough to prevent leakage and substantial enough to maintain their shape and position without springing or settling when concrete is placed. Forms shall be clean and smooth immediately before concreting. C. Placing Concrete: Concrete shall be deposited so as to require as little rehandling as practicable. When concrete is to be placed at an atmospheric temperature of 35 degrees F. or less, section 702.10 of INDOT, latest edition shall be followed. D. Curing Concrete: Except as otherwise specified, cure all concrete by one of the methods described in section 501. 17 of INDOT, latest edition. 16. Concrete Curb and Gutter: shall conform to requirements set forth in Section 605 of INDOT, latest edition. A. Expansion Joints: Shall be 1/2 in thick premoulded at ends of all returns and at a maximum spacing of 100 feet. B. Contraction Joints: Unless otherwise provided, cont- raction joints shall be sawed joints spaced 20 feet on center. C. Finish: Tamp and screed concrete as soon as placed, and fill any honey combed voids. Finish square corners to 1/4 inch radius and other corners to radii shown. D. Curing: Concrete curbs shall be cured with white membrane compound according to section 501.17(e) of INDOT, latest edition. 17. Concrete Walks and Exterior Steps: shall conform to section 604 of INDOT, latest revision. A. Slopes: Provide 1/4 inch per foot minimum cross slope. Make adjustments in slopes at walk intersections as necessary to provide proper drainage. B. Dimensions: Walks and steps shall be one course con- struction and of widths and details shown on the plans. C. Finish: Screed concrete and trowel with a steel trowel to a hard dense surface after surface water has disap- peared. Apply medium broom finish and scribe control joints at 5 foot spacing. Provide 1/2 inch expansion joints where sidewalks intersect, and at a maximum spacing of 48 feet between expansions joints. D. Wheel chair ramps shall be provided as detailed. 18. Street and Other Signs: Street name and other signs shall be furnished at the Developer's expense and installed prior to the release of the performance bond. The signs shall be installed on one post at each street intersection at an appropriate spot in the northeast corner wherever possible. SECTION 02710 UTILITIES 1. Utilities: It shall be the responsibility of each Contrac- tor to verify all existing utilities and conditions pertain- ing to his phase of work. It shall also be the Contractor's responsibility to contact the owners of the various utili- ties before work is started. The Contractor shall notify in writing the owners or the Engineer of any changes, errors or omissions found on these plans or in the field before work is started or resumed. 2. If active utilities are encountered by not shown on the drawings, the Engineer and utility representative shall be advised before work is continued. 3. Inactive and abandoned utilities encountered in excavq izg and grading operations shall be reported _to- t-he --Eng and utility company. They shall be removed, plugged or capped as directed by the utility company and Engineer. 4. Rules and regulations governing the respective utilities shall be observed in executing all work under this section. 5. Granular backfill shall be required for all crossings under pavement areas except for utilities which are bored or pushed under street. 6. Conduit shall be required for all crossings under pavement areas. Contractor shall coordinate with each respective utility for their location and installation. Conduit shall be 4" PVC Schedule 40 or approved equal. 1. See Sanitary Sewers for vertical and horizontal separations 2. All water lines shall be in accordance with the Standards and Specifications of the Indiana State Board of Health. Sterilization of water mains shall be in accordance with the Indiana State Board of Health for procedures and time of treatment. 3. Pressure tests for the water system shall be done in accordance with manufacturer's recommendations. 4. Granular backfill shall be required for entire trench if any portion of trench is within 5 feet from edge of pavement in public right -of -way. -5.- -4 1 r water mains sha I I be PVC. 6. Pipe shall conform to ANSI A -21.51 or AWWA C -151 and at a minimum shall be Pressure Class 350. 7. Fittings for ductile cast iron pressure pipe shall be ductile cast iron and conform to ANSI A -21.10 or AWWA C -110 and shall have a thickness class of 53. 8. Fittings for 4 -inch to 12-inch may conform to ANSI A -21.3 or AWWA C -153. 9. Where private water lines for potable water lines are shown on the contract plans, they shall be type "C" copper pipe for sizes up to 2 1/2 Copper water service lines and fittings shall conform to A. 5. T. M. B-88. 10. Thrust blocks shall be installed in accordance with the details contained within the plans. Felt material not to exceed%inch thick shall be placed between pipes and concrete thrust blocks. 3. A. All storm sewer pipe shall be reinforced concrete pipe conforming to ASTM Designation C -76 Class III, unless otherwise noted, in accordance with Section 906 of INDOT. Joints shall conform to ASTM C -433, latest revision. B. Alternate pipe material may be (aluminum coated) steel, Type II material conforming to the current AASHTO M36 for pipe 18 inches and smaller with a helical corruga- tion of 2 -2/3" x 1/2" and AASHTO M196 for pipe 21 inches and larger with a helical HyFlo corrugation of 3/4" x 3/4" x 7 -1/2 All CMP pipe shall meet the following minimum gages unless specified otherwise: 12 inch through 36 inch shall be 16 gage 42 inch through 48 inch shall be 14 gage 54 inch through 84 inch shall be 12 gage All sewers shall be installed so as not to exceed the maximum allowable pipe strength per ASTM and manufac- turer's requirements. If additional pipe strength is required for the probable earth live load condition, the Contractor shall use a higher strength or bedding method to satisfy the conditions. C. Where shown on plan, use high density Polyethylene (HDPE) Corrugated pipe with smooth interior (N 0.012). Pipe and fittings which meet or exceed the requirements of Type III, Category 4 or 5, Grade P33 or P34, Class C bedding per ASTM D1248. Joints shall be split corrugated couplings at least 7 corrugations wide and exceeding the soil tightness requirements of AASHTO standard specifications for Highway Bridges, Section 23 (2.23.3). Backfill and installation shall comply with manufacturer's recommendations. 4. Subdrainage system shall be installed as shown on Plans and be of pipes designated in Section 906 of INDOT as follows: Pipes to be installed for subsurface drainage only may be one of the following: A. Perforated corrugated drainage pipe in accordance with AASHTO M252 or AASHTO M294. PVC shall have minimum cell classification conforming to requirement of 12454 -C ASTM D -1784. B. Concrete drain tile in accordance with AASHTO M178. C. Vitrified clay tile in accordance with AASHTO M179. Where pipe is to be used for a collector of other subsurface laterals and /or sump pumps and installed with provisions for cleaning, it may be one of the following: A. ABS or PVC composite in accordance with ASTM 0 -2680. B. PVC in accordance with ASTM D -3034 SDR -35. C. PVC corrugated with smooth interior in accordance 4rh ASTM F949. 5. Backfill around all structures and cuts under paved areas and within five (5) feet of pavement edges with granular material in accordance with Section 211 of INDOT. 6. See standard detail sheet for construction dimensions of storm structures. Manholes, inlets and catch basins shall be in accordance w i t h Section 720 of INDOT. Precast .�.r. crete and steel for manholes and inlets shall be in j:,cr once with ASTM C -478, latest revision. Steps shall be ductile iron or aluminum integrally cast into each catch basin sidewalls. 7. The Contractor shall provide a minimum of one (1) foot of earth cover over all storm sewers. If pipe is to have construction traffic over it, Contractor shall provide a minimum temporary earth cover of four (4) feet, until or.- struction period is complete. After completion of opera- tions requiring construction traffic over pipe, Contractor shall remove the temporary earth cover and grade the earth to elevations shown on the Plans. 8. Rip rap particles shall be a minimum of 6" and a maximum of 17" in size and shall be placed a minimum of 18" in depth. Dimensions for rip-rap on this plan are for estimating purposes only. Actual best placement of rip -rap shall be determined by field conditions and shall be in accordance with Section 616 of INDOT. 9. All drainage pipe and ditch outfalls to receiving streams shall be constructed in accordance with drawings, subject however, to any modification required by Engineer at the time of installation is completed and to any adjustments needed for field conditions not adequately anticipated by the design drawings. 10. Castings shall be as shown on detail sheet for manufacturer, type and number. All castings shall be Neenah or East Jordan approved equal. Castings shall be gray iron meeting ASTM A -48, latest revision. 11. Install gaskets in accordance with manufacturer's recommen- dations for use of lubricants, cements and other special installation requirements. 12. Place plugs in ends of incomplete piping at end of work day or whenever work stops, and at stubs for future development. 13. Carry depth of trenches for piping to establish indicated flow lines and invert elevations. Notch under pipe bells where applicable to provide solid bearing for entire body of pipe. 14. Trenching: Lay all pipe in open trenches, except when the local authority gives written permission for tunneling. Open the trench sufficiently ahead of pipe laying to reveal any obstructions. The width of the trench shall be the outside pipe diameter plus nine (9) inches each side for 12 inches above the pipe or 0.3 x 0.0., whichever is greater. Sheet and brace trench as necessary to protect workmen and adjacent structures. All trenching is to comply with Occu- pational Safety and Health Administration standards. Con- tractor shall employ a Registered Professional Engineer to design trench safety systems for all trenches over twenty (20) feet in depth. Keep trenches free from water while construction is in progress. Under no circumstances lay pipe or appurtenances in standing water. Conduct the dis- charge from trench dewatering to drains or natural drainage channels. 17. Manhole Inverts: Construct manhole flow channels of con- crete, sewer pipe or brick, smoothly finished and of semi- circular section conforming to the inside diameter of the connecting sewers. Make changes in size or grade gradually and changes in direction by true curves. Provide such channels for all connecting sewers at each manhole. SECTION 2730 SANITARY SEWER CONSTRUCTION A. Current City of Carmel Utilities District, County and State specifications shall prevail as to materials and methods of construction. B. The Contractor shall be responsible for obtaining or verifying all permits for all or portions of this project prior to starting construction. Contractor shall notify the Carmel Department of Public Works 48 hours prior to commencement of sanitary construction. C. Sanitary sewers shall be installed in accordance with the Indiana Department of Environmental Management requirements. D. Sanitary sewers shown on the construction plans shall be SDR -35 PVC Pipe, where applicable, in accordance with A. S. T.M. D-3034, with minimum ce l l classification of 12454 (6" 15" pipe and fitting). E. All joint systems shall be elastometric seal (gasket) type. Seals shall conform to ASTM F -477 requirements Joint materials and testing shall conform to ASTM D -3212 requirements. F. Water and sewer line crossings and separations shall be in accordance with Ten States Standards and local codes. 1. Where water lines and sewer lines cross and the water line cannot be placed above the sewer line a minimum of 18" with a minimum cover of 48 the sewer line shall be constructed of waterworks grade cast iron pipe with mechanical joints. 2. Where water lines and sanitary sewer lines run p a r a l l e l with one another, a minimum of 10' horizontal separation shall be maintained. G. No roof drains, footing drains, and /or surface water drains may be connected to the sanitary sewer system including a temporary connection during construction. H. The Contractor shall provide the Engineer with "as- built" locations and information for all sanitary sewer laterals within ten days after completion. I. The Contractor shall remove by pumping or other suitable methods any water which may accumulate in trenches. J. The Contractor shall be responsible for all tests for leakage, infiltration and deflection as established by the City of Carmel and the Indiana Department of Env i ronrrenta I Management. Any portions not passing said tests for acceptance shall be repaired or replaced at the Contractor's expense, including re- excavation and backfill. All testing shall be observed by a Professional Engineer for certification within forty days after completion. Infiltration shall not exceed 100 gallons per day per inch f i diameter o e d erne mile l e of pipe er er i per P e. Deflection tests shall be performed on all flexible pipe. The test shall be conducted after the final backfill has been in place at least 30 days to permit stabilization of the soil -pipe system No pipe shall exceed a deflection of 5 percent. If deflection exceeds 5 percent, replacement or correction shall be accomplished in accordance with requirements in the approved specfications. The rigid ball or mandrel used for the deflection test shall have a diameter no less than 95 percent of the base inside diameter or average inside diameter of the pipe depending on which is specified in the ASTM Specification, including the appendix, to which the pipe is manufactured. The pipe shall be measured in compliance with ASTM D 2122 Standard Test Method of Determining Dimensions of Thermoplastic Pipe and Fittings. The test shall be performed without mechanical pulling devices. K. L. M. N. 0. Pipe shall be laid in open trenches, except when conditions require and the appropriate approving agencies give written permission for tunneling or jacking of pipe. Trench shall be opened sufficiently ahead of pipe laying to reveal obstructions, and shall be properly protected and/or barricaded when left unattended Contractor shall be responsible for sheeting and bracing of trenches as necessary to protect workmen and adjacent structures. All trenching shall be done in accordance with 0. S. H. A. standards to protect workmen. Granular backfill shall be required for entire trench if any portion of trench is within 5 feet from edge of pavement. All service corrections shall be made using a wye and a bend. Tees shall be used only as directed by the City of Carmel. Tees and wyes shall be die cast or factory fabricated. All service pipe shall be SDR 35. P. Corrections to existing piping shall be mode using flexible repair couplings by Fernco or equal. "DON'T DIG BLIND" 1- 800 382 -5544 CALL BEFORE YOU DIG W .0 0) O z 0 CC w o J w Q a z wo- 0 Z W D 0 a 3 U 2 0 (1) 0 Q LL. U W d CJ) O _O 0 4 o O c CV of R. C co jC o C C O C co c o o co C DATE: MARCH 08, 2000 SCALE: N/A PROJECT NO. 111 -1150 SHEET NO. C102 SECTION 01340 SHOP DRAWINGS AND SAMPLES 1. Submit all drawings, diagrams, illustrations, schedules, performance charts, instructions, specifications and other project data illustrating portions of the work as required by the specification section. Such submittals, whether or not referred to as shop drawings herein prescribed. Unless otherwise noted in the specification sections, submit a minimum of five (5) sets of shop drawing to Engineer. Two (2) sets will be returned to Contractor unless otherwise requested. 2. Do not commence any portion of the work requiring a shop drawing or sample submittal until the submittal has been approved as prescribed herein. All such portions of the work shall be in accordance with approved shop drawings or samples. 4. Perform earthwork grading and finishing operations to estab- lish required elevations and dimensions as designated on the Plans. 5. Place topsoil to minimum depths indicated on the planting plans in each respective area. Place topsoil in layers not to exceed six (6) inches following light compaction and develop smooth planting surfaces. Subgrade shall be scari- fied to 3" to 6 in depth before topsoil is spread. Remove all vegetation, stones, roots and rubbish from topsoil and rake to even surface. Carefully spread topsoil to meet walks, curbs, paving, adjacent properties and be free of low spots. Contractor shall be responsible for insuring that 11. Pavements built by stage construction, that is pavements used to carry traffic before the full pavement structure is in place, will have each stage used by traffic inspected by the Street Inspector for distressed areas before the next stage is started. Distressed areas will be repaired to the satisfaction of the Street Inspector before an additional stage is constructed. 12. Concrete: Plain concrete pavements shall be constructed in accordance with section 501 of INDOT, latest revision. Concrete shall be ready -mixed concrete and shall be a mix of proportioned fine and coarse aggregates with Portland cement L Existing storm sewers, sanitary sewers, water mains, gas mains, electric ducts, telephone ducts, steam mains and other underground structures hove been shown on the plans according to the best available information. The exact location and protection of these facilities and structures, their support and maintenance in operation during construc- tion (in cooperation with the proper authorities of the utility involved), is the express responsibility of the Contractor in the performance of his Contract and in the preparation of his bid. SECTION 2715 WATER LINE SPECIFICATIONS SECTION 02720 STORM SEWERS 1. Scope of Work The work under this section includes all storm sewers, storm sewer inlets, and related items including excavating and backfilling, necessary to complete the work shown on the Plans. 2. Standard Specifications of the City of Carmel and the Indiana Department of Highways Standard Specifications (INDOT), latest edition, shall apply for all work and materials. Pipe shall be installed in accordance with Section 715 of INDOT. All trench excavations deeper than five (5) feet are covered by OSHA Standard 29CIR 1926 Subpart P. 15. All pipes on steep slopes (over 20 shall have concrete anchors at maximum 40 feet intervals as shown on detail. 16. Backfilling: For a depth of at least 12 inches above the top of the pipe, backfill with earth or granular material free from large stones, rock fragments, roots or sod. Tamp this backfill thoroughly, taking care not to disturb the pipe. For the remaining trench depth, backfill with earth or granular material which may contain stones or rocks not larger than four (4) inches. Backfill under walks, parking areas, driveways and streets shall be granular material only and shall be thoroughly compacted by approved methods to the density specified. Trenches parallel to and within five (5) feet of paved roadways shall be constructed the same. All granular backfill shall be compacted to 95% Standard Proctor maximum dry density. 1150SPEC.DGN